Considering that velvetleaf is a weed invasive to cornfields, how would you predict increased CO2 concentration
to affect interactions between the two species?
As atmospheric CO2 rises, the better-growing velvetleaf weeds will use up most of the CO2 in cornfields.
As atmospheric CO2 rises, velvetleaf weeds may grow larger and better compete with corn, reducing grain
yields.
As atmospheric CO2 rises, the larger corn will be better able to compete with the velvetleaf weeds.
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